My friend was in a similar dilemma last year and chose DTU over IIT Patna. She considers new IITs overhyped and not at par with the IIT standards. Running after the IIT tag is not logical and you should look at the bigger picture. Anaise your career prospects and see if other options fit your prospects or not.
DTU is a great option for CSE considering the excellent exposure and opportunities you will get in Delhi, the capital. The salary packages, the companies, and the profiles offered at DTU are similar to the new IITs if not better.
To make things simpler, here are a few pros and cons of going for a new IIT instead of DTU
Pros:
Cons:
Ultimately it’s your choice whether you want a better campus life or the IIT tag.